What is it that qq can't send short messages?

First of all, make sure that you are really bound to your mobile phone. According to you, it should not be bound to the mobile phone. Binding is free.

Then, instead of binding the phone to send text messages, you need to open the SMS Superman. The fee is 5 yuan per month.

After opening it, the friends in the phone will be automatically saved to the server, just like in Friends.